CVE-2024-20480 describes a denial-of-service vulnerability in the DHCP Snooping feature of Cisco IOS XE Software on SD-Access fabric edge nodes. An unauthenticated, remote attacker can exploit this by sending specially crafted IPv4 DHCP packets, causing high CPU utilization and requiring a manual reload to recover. This vulnerability carries a high CVSS score of 8.6 due to its network-based attack vector, low attack complexity, and high impact on availability. While the FAUCET Risk Score is 70/100, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
16.1.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.1.1:*:*:*:*:*:*:* | ||
16.1.2CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.1.2:*:*:*:*:*:*:* | ||
16.1.3CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.1.3:*:*:*:*:*:*:* | ||
16.2.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.2.1:*:*:*:*:*:*:* | ||
16.2.2CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.2.2:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.